Mother Nature is capable of some incredible things, but we have to credit humanity with the dubious feat of aging a shark 240 years in just 16 months.

“272-Year-Old Shark Is Longest-Lived Vertebrate on Earth” was National Geographic's headline in August 2016, after researchers estimated the age of a particularly long-in-the-tooth Greenland shark.

But for some reason, the shark's North Atlantic cousins, the British tabloids, dug up the same study this week and advanced the shark's age to 512 years — “meaning it was born before SHAKESPEARE,” as the Sun explained.

Before long, Newsweek was getting in on the ancient shark frenzy, and Live Science was patiently trying to explain that, no, no known shark has been swimming around for half a millennium.

The shark's meat is toxic if eaten, as fishermen have discovered when they tried to make the best of a skalugsuak tangled up in their net.

And while exact ages are hard to pin down, the shark does appear to grow very, very old.

The scientists had to use creative methods to estimate the ages of 28 Greenland sharks they'd captured.

They used radiocarbon dating to determine that most of the specimens predated nuclear bomb tests, which began in the 1950s. Then they extrapolated from the shark's extremely slow growth rate that the largest was likely just shy of four centuries old.

But given the margins of error, the shark could have been as young as 272 or as old as 512 — thus, the Daily Star's screaming headline about “Ancient LIVING shark born in 1500s.”

It's still unclear why the newspapers started recycling the study this week, although of course we're now guilty of the same thing, as The Washington Post was among the outlets that covered the paper when it came out last year.

The Post even talked to a marine researcher not involved in the study, who was a little skeptical of age estimates but convinced that the shark was incredibly old regardless.

“The business of whether it’s got another 100 years here or there,” he told us, “is almost irrelevant.”

But not to the headlines.

This undated photo made available by Julius Nielsen in 2016 shows a Greenland shark swimming away from a boat and returning to the deep and cold waters of the Uummannaq Fjord in northwestern Greenland. (Julius Nielsen/AP)